(Reuters) U.S. President Donald Trump’s son-in-law and close adviser, Jared Kushner, had at least three previously undisclosed contacts with the Russian ambassador to the United States during and after the 2016 presidential campaign, seven current and former U.S. officials told Reuters.

Those contacts included two phone calls between April and November last year, two of the sources said. By early this year, Kushner had become a focus of the FBI investigation into whether there was any collusion between the Trump campaign and the Kremlin, said two other sources - one current and one former law enforcement official.

Kushner initially had come to the attention of FBI investigators last year as they began scrutinizing former national security adviser Michael Flynn’s connections with Russian officials, the two sources said.

While the FBI is investigating Kushner’s contacts with Russia, he is not currently a target of that investigation, the current law enforcement official said.

The new information about the two calls as well as other details uncovered by Reuters shed light on when and why Kushner first attracted FBI attention and show that his contacts with Russian envoy Sergei Kislyak were more extensive than the White House has acknowledged.